1. Retinol Serum, every evening: after cleansing and toner, dry the skin, then press 2–3 drops of Celimax The VITA-A Retinol Shot Tightening Serum into the face, avoiding the eye area. Follow with moisturizer.
2. Retinal Booster, 2 nights a week after the first 2 weeks: press a few drops of Celimax The Vita-A Retinal Shot Tightening Booster into the skin before the serum, or mix the two in your palm. Build up to 3 nights a week as tolerated.
3. Every morning, apply sunscreen; vitamin A increases sun sensitivity.
Note: Mild dryness or tingling in the first weeks is normal; reduce frequency if skin flakes. Do not combine with exfoliating acids on the same night. Not recommended during pregnancy or breastfeeding.

What it is: A two-step Celimax vitamin-A set: The VITA-A Retinol Shot Tightening Serum (30ml) for nightly use and The Vita-A Retinal Shot Tightening Booster (15ml) for booster nights.
Why it works: Retinoids speed cell turnover, refine pores and stimulate collagen, but skin needs time to adapt. Retinol, the gentler form, does that work every night with panthenol to keep the barrier comfortable. Retinal (retinaldehyde) is one conversion step closer to the active form skin uses, so it works faster and stronger; used only on booster nights once tolerance is built, it accelerates results without the irritation of daily high-strength use. Stepping between the two is how dermatologists recommend building up to vitamin A, and this pair makes the schedule simple.